/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */
package org.apache.hc.client5.http.examples;

import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;

import org.apache.hc.client5.http.classic.methods.HttpGet;
import org.apache.hc.client5.http.impl.classic.CloseableHttpClient;
import org.apache.hc.client5.http.impl.classic.CloseableHttpResponse;
import org.apache.hc.client5.http.impl.classic.HttpClients;
import org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManagerBuilder;
import org.apache.hc.client5.http.io.HttpClientConnectionManager;
import org.apache.hc.client5.http.protocol.HttpClientContext;
import org.apache.hc.client5.http.ssl.SSLConnectionSocketFactory;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.ssl.SSLContexts;
import org.apache.hc.core5.ssl.TrustStrategy;

/**
 * This example demonstrates how to create secure connections with a custom SSL
 * context.
 */
public class ClientCustomSSL {

    public final static void main(final String[] args) throws Exception {
        // Trust standard CA and those trusted by our custom strategy
        final SSLContext sslcontext = SSLContexts.custom()
                .loadTrustMaterial(new TrustStrategy() {

                    @Override
                    public boolean isTrusted(
                            final X509Certificate[] chain,
                            final String authType) throws CertificateException {
                        final X509Certificate cert = chain[0];
                        return "CN=httpbin.org".equalsIgnoreCase(cert.getSubjectDN().getName());
                    }

                })
                .build();
        // Allow TLSv1.2 protocol only
        final SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                sslcontext,
                new String[] { "TLSv1.2" },
                null,
                SSLConnectionSocketFactory.getDefaultHostnameVerifier());
        final HttpClientConnectionManager cm = PoolingHttpClientConnectionManagerBuilder.create()
                .setSSLSocketFactory(sslsf)
                .build();
        try (CloseableHttpClient httpclient = HttpClients.custom()
                .setConnectionManager(cm)
                .build()) {

            final HttpGet httpget = new HttpGet("https://httpbin.org/");

            System.out.println("Executing request " + httpget.getMethod() + " " + httpget.getUri());

            final HttpClientContext clientContext = HttpClientContext.create();
            try (CloseableHttpResponse response = httpclient.execute(httpget, clientContext)) {
                System.out.println("----------------------------------------");
                System.out.println(response.getCode() + " " + response.getReasonPhrase());
                System.out.println(EntityUtils.toString(response.getEntity()));

                final SSLSession sslSession = clientContext.getSSLSession();
                if (sslSession != null) {
                    System.out.println("SSL protocol " + sslSession.getProtocol());
                    System.out.println("SSL cipher suite " + sslSession.getCipherSuite());
                }
            }
        }
    }

}
